December Meeting

We are the largest ham radio DX club in Arizona with over 120 members, many of whom are on the ARRL's DXCC Honor Roll.  We have several members who have traveled to distant places to put "rare" countries on the air.  We encourage any ham interested in DXing to join our club and learn about the many aspects of talking to hams around the globe who share this amazing hobby with us.  Founded in 1974, we are an ARRL-affiliated club and a member club of the Amateur Radio Council of Arizona (ARCA).

From DX Heat


CADXA Repeater and Net
Join us on the K5VT repeater to announce and discuss DX.  In addition, there is a Thursday night net at 7:00 pm except on CADXA meeting nights.  The repeater and net are open to all DX enthusiasts.   
147.32 MHz (+) no PL tone

Current Solar Data

The sunspot numbers are certainly deceiving as far as what is possible on the HF bands.  If 15 meters is "dead" at this point in the sunspot cycle, how was it possible to work 106 countries in the CQWW Phone contest at the end of October?  That is what I did along with NA2U as a multi-op entry using a new triband yagi at our remote station in Safford.  The openings to Europe on both Saturday and Sunday mornings were surprisingly good as was the opening to Asia both afternoons.  Even 10 meters produced over 30 countries in the Caribbean, Central and South America, with a little of the Pacific and Oceania for good measure.  20 meters was reliable as expected, but it was a lot more fun to work the world on bands that are supposed to be useless at this point in the sunspot cycle. 

For day-to-day DXing, 17 meters continues to be the go-to band with strong signals from Europe on many mornings.  For a quick read on band openings, aside from the spots on the DX clusters, you can get a quick read on propagation by checking the decodes on FT8 on any band.  If you can print European signals on WSJT-X, you know the band is probably open for CW and Phone as well. 

It is also the time of year when storm static has subsided and with the longer nights, propagation on 40, 80, and 160 meters is rapidly improving.  I was surprised and delighted to find OH0Z on Aland Island very readable on 160m just after our sunset one recent evening.  A number of the recent expeditions have been putting in time on the LF bands much to the delight of DXers.  VK9MA is a great example.

I hope more CADXA members were inspired to try the new digital modes by the program at our November meeting led by Larry Loen, WO7R.  "The FT8/JT65 Revolution" is for real and as a DXer, "if you snooze you lose" while more and more of the ham world transitions to these new modes to work DX.   


Lee, KY7M

Announced DX Operations
by NG3K

Courtesy of The Daily DX™

Central Arizona DX Association

Our next meeting will be on Thursday night, December 7th, at the PERA Club, beginning at 7:00 pm.  The program will be “The K3LR Story” presented by Tim Duffy, K3LR, a member of the CQ Contest Hall of Fame.  For many years now, the K3LR station has operated in the Multi-Multi category of the big DX contests.  Tim will give us a first-hand account of what it takes to compete with the best of the east coast stations in terms of radios, antennas, operators, and strategy.  Tim is also very well known for his participation in DXpeditions and his involvement at DX Engineering. 

Please feel free to arrive early to socialize with your friends.  Refreshments will be served at the break.  Guests are always welcome.

The November meeting program was given by Larry Loen, WO7R, and supported by a panel of CADXA "digital experts" on "The FT8/JT65 Revolution".   Larry, along with commentary from AA7A, K7MTR, and KY7M went through the basics of these rapidly evolving digital modes.  Larry provided a number of examples showing how his own DXing ability has changed with opportunities to work DX stations that might otherwise not be available on CW or SSB, particularly on the most difficult ham bands for DXing -- 160, 80, and 6 meters.

Larry provided numerous screen shot examples and explained how FT8 has sped up digital QSOs from 6 minutes with JT65 down to 90 seconds.  He also started a discussion about operating techniques that illustrated there is much more strategy involved in DXing on FT8 than merely pressing buttons as some have claimed.

Ned, AA7A, who has been part of Joe Taylor's FT8 development team, wrapped up the program by describing the effort to develop an innovative use of FT8 that could be used by future DXpeditions to easily exceed the best QSO rates that RTTY can currently provide.

President's Message

Nov. Meeting Recap

Welcome to the Central Arizona DX Association